Exercise device



FIG. 1 is a perspective view showing the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is side elevational view taken from the right of FIG. 1; and,

FIG. 7 is a side elevational view taken from the left of FIG. 1. 

The ornamental design for an exercise device, as shown. 